人教新目標版九上英語Unit6SectionA（GF-4c）【教案】

Unit6Whenwasitinvented?SectionA（GF-4c）TeachingAims1.語言能力：了解電話發(fā)明的過程。2.思維品質：學會運用一般過去時的被動語態(tài)改寫句子。3.學習能力：恰當使用一般過去時的被動語態(tài)。TeachingDifficulties被動語態(tài)的用法TeachingAidsmultimediacoursewareorotherrealiathattheTneedsforteachingTeachingProceduresTipsStep1Warmingup猜發(fā)明不是重點，重點是通過這個活動練習使用被動語態(tài)。PairWorkAskSstopairup.S1thinksofaninventionandS2asksquestionsaboutit.S2shouldguesswhattheinventionisbyaskingthequestions.(Tip:SscanfollowtheexampleonPPTP8,ortheycanmaketheirownconversation.TshouldencourageSstousethepassivevoice.)Step2Presentation&PracticeShowSssentenceswithactivevoiceandpassivevoice,askthemtofindoutthedifferencesbetweenthem.Usethesentences“WhitcombJudsoninventedthezipperin1893.”and“ThezipperwasinventedbyWhitcombin1893.”asanexample,askSstopayattentiontothepositionchangeofeachsentencecomponent.GrammarFocusAskSstoreadthesentencesintheboxandexplaintheusageofpassivetothem.語態(tài)是動詞的一種形式，用來說明句中主語和謂語動詞的關系。如果主語是動作的執(zhí)行者，則使用主動語態(tài)；如果主語是動作的承受者，則使用被動語態(tài)。被動語態(tài)有“be動詞+過去分詞”構成，如果要特別強調動作或行為的執(zhí)行者時，句子后面需接by...，譯為“被/由”。其中be動詞要根據(jù)人稱、數(shù)和時態(tài)發(fā)生變化、be動詞后面的過去分詞不變。被動語態(tài)的肯定句：主語+be+過去分詞+(by...).被動語態(tài)的否定句：主語+benot+過去分詞+(by...).被動語態(tài)的一般疑問句：Be+主語+過去分詞+（by...）?被動語態(tài)的特殊疑問句：疑問詞+be+主語+過去分詞+（by...）?4aAskSstorewritethesentencesusingthepassivevoice.Answers:1.Thefridgewassoldatalowprice.2.Mycamerawasstolenfrommyhotelroom(bysomebody).3.Wherewerethesephotostaken?4.Wewereadvisednottogooutalonebyourparents.5.Thebookwastranslatedintodifferentlanguagesbydifferentwriters.4bAskSstocompletethesentenceswiththecorrectformsoftheverbsinthebox.Answers:1.wereinvited2.werebrought3.waslocked;rang4.weretold;broke5.wereeaten;liked4cAskSstoreadtheshortpassageanddecidewhetheractiveorpassiveformsshouldbeusedinthesentences.Answers:wasinvented,wasborn,worked,learned,wasinvented,wassaid,isusedStep3Summary&HomeworkSummaryAskSstodotheexercisesfromPPTP23-24.HomeworkPreviewSectionB1a-1e.Dotheexercisesinstudents’book.TeachingReflectionInthisperiod,studentsshouldlearn